Wristwatch



FIG. 1 is a perspective view from below of a wristwatch showing my new design;

FIG. 2 is a perspective view from above, thereof;

FIG. 3 is a top plan view thereof with the bracelet extended; and,

FIG. 4 is a bottom plan view thereof with the bracelet extended. 

The ornamental design for a wristwatch, as shown and described. 